Improvement in sewing-machine casters



J. H. STRONG.

SEWING-MACHINE CASTER.

Patented Apr'114,187 6.

UNITED TATES PATEN OFFICE.

JOSEPH H..STRONG, OF DES MOINES, IOWA.

IMPROVEMENT IN SEWING-MACHlNE CASTERS.

Specification forming part of Letters Patent No. 175,630, dated April 4,1876; application filed To all whom it may concern.- 7

Be it known that I, JOSEPH H.- STRONG, of Des Moines, in the county ofPolk and State of Iowa, have invented an Improved Caster forSewing-Machines, of which the following is a specification My inventionis an improvement of my caster patented March 17, 1874, No. 150,264. Itconsists in the manner of forming and combining a ring-formed brake witha caster and the foot of a stand, as hereinafter fully set forth.

Figure l of my drawing is a perspective view, illustrating my manner ofarranging and combining a sewing-machine foot, a caster, and aring-formed brake. Fig. 2 shows another mode of applying the sameoperating mechanism by means of a bracket.

A represents the foot of a stand. .It has a vertical bore in its center,as indicated by broken lines. I) is a horizontal slot or mortise,intersecting the bore in the center of the foot. 0 is the spindle orshank of the wheel-bearer B. d is a groove in the shank 0, correspondingin position with the slot b in the foot A.

f is an open ended loop or staple, passed through the slot bin the footA, and thegroove d in the shank c, to form a bearing for the rotatingshank c, and to retain the shank in the bore of the foot.

I am aware that a caster has been combined with the foot of a stand in asimilar manner; but I consider that my ring-formed brake, in combinationwith the otherelements, is new and advantageous.

January 3, 1876.

Fig. 2 is a perspective view, illustrating my improved manner ofapplying and operating a ring-formed brake.

G is a ring-formed brake, in the shape of a conical sleeve, designed topass over the foot of a stand, or a substitute for a foot carried by anattachment or bracket, D. g is an inclined plane in the top edge of thesleeve D. h is a corresponding inclined plane on the foot or bracket.Similar inclines are formed directly opposite to keep the sleeve andringformed brake O in balance. mm represent projections on the sleeve 0,designed as handles or levers for turning the sleeve. By turning thesleeve 0 to the left, the fixed and inverted inclined planes h on thefoot will engage the inclined planes 1 in the top of the sleeve, andpress its base and ring-formed brake upon the caster-wheel and lock it.A reverse movement of the sleeve will free the wheel.

I claim as my invention 1. The caster-pintle 0, having the groove 01,the foot or socket A, having the slot b, the ring-formed brake O, andthe securing-loop f, all arranged and combined substantially as and forthe purposes shown and described.

2. The ring-formed brake and sleeve 0, having the inclined planes 9, incombination with a foot or bracket, D, having inclined planes h, and acaster-Wheel, substantially as and for the purposesshown and described.

JOSEPH H. STRONG.

Witnesses:

O. O. BRANNEN, G. A. JOHNSON.

